Tell me honestly how it went.

If I have done work for you, I would like your honest account of it. Not a favour, not a star rating. What you asked for, what you got, and what you would tell someone else who was thinking of hiring me.

Write what you actually think. If the work was slow, or something did not land, say that. A review that only says good things is no use to the next person reading it, and no use to me.